fetchAssetCollections(with:subtype:options:)
Retrieves asset collections of the specified type and subtype.
Declaration
class func fetchAssetCollections(with type: PHAssetCollectionType, subtype: PHAssetCollectionSubtype, options: PHFetchOptions?) -> PHFetchResult<PHAssetCollection>Parameters
- type:
A type of asset collection, such as an album or a moment. See Phassetcollectiontype.
- subtype:
A subtype of asset collection. See Phassetcollectionsubtype.
- options:
Options that specify a filter predicate and sort order for the fetched asset collections, or
nilto use default options. For details, see Phfetchoptions.
Return Value
A fetch result that contains the requested PHAssetCollection objects, or an empty fetch result if no objects match the request.
Discussion
By default, the returned PHFetchResult object contains all asset collections with the specified type and subtype. To retrieve a more specific set of asset collections, provide a PHFetchOptions object containing a filter predicate.